Incinerator type environmental control system

ABSTRACT

A relatively small and compact system for cleaning and purifying products of combustion resulting from incineration of waste materials including smoke and particles suspended therein as well as gases produced thereby wherein all of the products of combustion are forced from a first burning chamber into a balanced flow system including a second burning chamber having a burner flame completely enveloping the input thereto for incinerating the smoke etc. to a substantially clean, hot exhaust gas. The extremely hot exhaust gases are fed into a temperature reduction labyrinth having several direction changes while maintaining the constant volumetric flow therethrough and finally through a scrubbing stage including a water bath, a series of water sprays and an output baffle while still maintaining the constant volumetric flow for completely removing any other products remaining in the exhaust gases thereby reducing air pollution to substantially a zero level.

[451 May30, 1972 INCINERATOR TYPE ENVIRONMENTAL CONTROL SYSTEM [72]Inventors: William H. Schwartz, Jr.; Billy D. Maxwell, both of Gary,Ind.

[73] Assignee: Environmental Corporation [22] Filed: June 17, 1970 [21]Appl. No.: 46,937

[52] U.S.Cl. ..l10/8C,ll0/18C [51] Int. Cl. ..F23g 5/12 [58]FieldoiSearch ..110/8 R,8A,8C, 18 R, 18C

[56] References Cited UNITED STATES PATENTS 3,031,981 5/1962 Smauder..110/8 3,453,976 7/1969 Burden, Jr. et al. ..110/18 3,495,555 2/1970Boyd et a1 ..110/8 3,043,249 7/1962 Hebert et al. .110/8 X 3,051,1008/1962 Singleton.... ....l 1018 3,082,714 3/1963 Close ....110/83,176,634 4/1965 Martin ....110/8 3,403,645 10/ 1968 Flowers, Jr ..110/8X 3,489,109 l/l970 Flowers, Jr. ..110/18 Primary Examinerl(enneth W.Sprague Attomey-McDougall, Hersh & Scott ABSTRACT A relatively small andcompact system for cleaning and purifying products of combustionresulting from incineration of waste materials including smoke andparticles suspended therein as well as gases produced thereby whereinall of the products of combustion are forced from a first burningchamber into a balanced flow system including a second buming chamberhaving a burner flame completely enveloping the input thereto forincinerating the smoke etc. to a substantially clean, hot exhaust gas.

The extremely hot exhaust gases are fed into a temperature reductionlabyrinth having several direction changes while maintaining theconstant volumetric flow therethrough and finally through a scrubbingstage including a water bath, a series of water sprays and an outputbaffle while still maintaining the constant volumetric flow forcompletely removing any other products remaining in the exhaust gasesthereby reducing air pollution to substantially a zero level.

20 Claims, 7 Drawing Figures Patented May 30, 1972 3,665,871

2 Sheets-Sheet 1 INVENTORS R M WILLIAM H. SCHWARTLJR. HI 4 BILLY 0.MAXWELL ATTORNEYS Patented May 30, 1972 2 Sheets-Sheet 2 NOV FIG 7BLOWER PUMP BURNER INCINERATOR TYPE ENVIRONMENTAL CONTROL SYSTEMBACKGROUND OF THE INVENTION 1. Field of the Invention This inventionrelates to incinerator apparatus for consuming all forms of combustiblerefuse, trash, and garbage or other organic rubble for either domesticor commercial applications where it is necessary to eliminate the smokeor gaseous oxidation products of the incinerator to a sightless andodorless state before exit into the surrounding environment.

2. Description of the Prior Art The purification or cleaning of gaseousproducts of combustion to eliminate smoke and fly ash presents a seriousair pollution problem which is a hazard of national scope and isreceiving substantial attention not only from local and national healthauthorities but also from legislators. The problem, however, is not anew one since with the ever increasing urban population, air pollutionthreatens the very lives of urban as well as suburban inhabitants.Combined with the problem of air pollution, is the disposal of wastematerials in large cities or congested areas. These waste materials mustbe disposed of and the ordinary method of disposal is by incineration.The following patents are noted as being typical examples ofincinerators which constitutes the known prior art related to thesubject invention: U.S. Pat. No. 3,043,249, .I. W. Hebert, et al. U.S.Pat. No. 3,051,100, C. N. Singleton U.S. Pat. No 3,082,714, S. CloseU.S. Pat. No. 3,176,634, L. S. Martin U.S. Pat. No. 3,403,645, G. H.Flowers, Jr. U.S. Pat. No. 3,489,109, G. H. Flowers, Jr.

While the above cited prior art discloses a second burning zone or anafterbumer which has for its purpose the incinerating of any gases orfly ash from the exhaust, these relatively small compact units which areparticularly adapted for residential use, feed directly into a chimneyor flue. While incinerators including gas scrubbing apparatus is alsowell known for ash removal and gas scrubbing, it is generallyexclusively utilized in large complex systems since apparatus of thetype referenced above has not been adapted to utilize such apparatus norwas it believed to have been necessary.

SUMMARY The present invention is directed to an improved relativelysmall compact incinerator for both residential and commercial use whicheffectively removes all of the combustible products of the exhaust gasesresulting from incineration so that it ultimately discharges exhaustgases into the atmosphere which is smokeless, odorless and free of flyash. The system contemplated by the subject invention briefly comprisesa first burning chamber of relatively large volume wherein wasteproducts are incinerated. All of the products of combustion resultingfrom the incineration are forced into a second relatively smaller,elongated, cylindrical burning chamber located adjacent the firstburning chamber which includes means for providing a flame axiallytherethrough such that all of the products of combustion must passthrough the flame in the second burner. A mixing nozzle is affixed tothe output end of the second burning chamber for providing a vortex orswirling output of exhaust gases therefrom which are then fed through abalanced flow temperature reduction means including a plurality oftortuous passages and then to a scrubbing means to an exit flue, wherebythe dimensions of the power burner stage, the temperature reductionmeans and the scrubbing means are constrained to provide a constantvolumetric flow therethrough and thereby provide a substantiallypollution free exit gas into the atmosphere.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a perspective view of thesubject invention partially cut away to disclose the first burningchamber and the exit port thereof;

FIG. 2 is a sectional view of the embodiment shown in FIG. 1 taken alongthe lines 22 thereof disclosing the second burning chamber including acylindrical burner tube and a temperature reduction labyrinth;

FIG. 3 is a fragmentary sectional view of the embodiment shown in FIG. 1taken along the lines 3-3 disclosing the scrubber apparatus followingthe temperature reduction labyrinth;

FIG. 4 is a cross-sectional view of the embodiment shown in FIG. 1 takenalong the lines 4-4 further illustrating the scrubber apparatus shown inFIG. 3;

FIG. 5 is a front elevation view of the embodiment shown in FIG. 1;

FIG. 6 is a rear elevational view of the embodiment shown in FIG. 1; and

FIG. 7 is an electrical block diagram for operating the embodiment shownin FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawingswherein the same reference numerals refer to the same parts of thevarious views of the invention, reference numeral 10 generallydesignates a substantially cubical housing of refractory material andcan, when desirable, also include an outer metallic casing, not shown.In the forward portion of the upper wall 12 of the housing 10, islocated a charging door 14 forming an entrance into a first incineratingor burning chamber 16, of relatively large volume and describing aconfiguration of flat walls intersecting orthogonally. The chamber 16 isoften referred to as a tire box. A grate 18 is located in the lowerportion of the chamber 16 and extends completely across the chamber andis adapted to receive rubbish or waste material for burning, not shown,when placed thereon by means of the door 14. A pullout drawer 20 islocated at the bottom of the first chamber 16 below the grate 18 for thereception of ashes resulting from the burning of the material placedthereon. The pullout drawer 20 is adapted to be removed from theincinerator chamber 16 through the front wall 22 of the housing 10 byapplying manual force to the handle 24 attached to the drawer 20.

A first oil or gas burner 26 is mounted in the front wall 22 a shortdistance above the grate 18 for providing a means of igniting andincinerating the material placed on the grate 18 for disposal. Theburner 26 is fed from a source, not shown, by means of the conduit 28. Aforced draft for supporting combustion inside of the housing 10 isprovided by an air blower 28 mounted on the exit or chimney flue 30located at the rear portion of the top wall 12 causing an external airto be pulled into the housing 10 and through the system to be describedby means of the ports 32 located on the pilot burner 26. The portopenings may be fixed or variable depending upon the specificapplication.

In the upper right hand comer of the back wall 34 of the first burningchamber 16 is exit port 36 of substantially rectangular cross sectionwherein all of the smoke and gaseous products of combustion resultingfrom incineration of waste material placed in the burning chamber 16 isdrawn thereto by means of the blower 28. The smoke etc. drawn to theport 36 passes into a small antechamber 38 which is generallyrectangular in cross section as shown in greater detail in FIG. 2. Ahollow cylindrical power burner tube 40 comprising a second burningchamber passes through the antechamber 38 in a substantially horizontaldirection behind the wall 34 (FIG. 1). A plurality of intake openings 42are fabricated in tube 40 only in that portion which extends into theregion described by the antechamber 38. The plurality of openings 42comprise substantially rectangular slots and inwardly directed tabs 44.A second gas or oil bumer'46 shown in FIG. 1, called a power burner, islocated on the side wall 47 and is attached to the power burner tube 40through a transition member 48. A flame when generated, is directedthrough the transition member 48 and into the power burner tube 40 alongits central axis so that the flame substantially fills the burner tube40 for a predetermined adjustable length. By selectively adjusting theamount of fuel fed to the power burner 46 by a control 50, for example,the flame through the power burner tube can be adjusted for any desiredamount.

All of the products of combustion in the chamber 16 except the ashfalling into the drawer 20 must pass through the intake openings 42 dueto the suction created by the blower 28 and everything contained thereine g. smoke and unburned particles held in suspension is forced into thepower burner flame. By selectively adjusting the flame in the powerburner tube 40 substantially all of these unburned products areincinerated therein.

As noted above, the power burner tube 40 is shown mounted in asubstantially horizontal position in the refractory material of thehousing behind the back wall 34 of the burning chamber 16. Additionallythe tube 40 faces the inner surface of the left side wall 52 such asshown in FIG. 2. An output nozzle 54 including a plurality of radiallyextending vanes 56 is mounted on the other end of the power burner tube40 so as to provide a swirling or vortex motion for the exhaust gasesemanating from the power burner tube 40. Both the nozzle 54 and thepower burner tube 40 are comprised of metallic material such asstainless steel or cast iron which can easily accommodate the hightemperatures provided by the power burner flame which is adapted toextend even to the output of the nozzle 54.

The swirling exhaust from the nozzle 54 is fed into a temperaturereduction labyrinth of substantially constant cross section and beingcomprised, inter alia, of a relatively short passageway 58 extending tothe wall 52. A second passageway 60 then extends vertically to thebottom wall 62 of the housing 10. A third passageway 64 extendshorizontally along the bottom wall 62 and enters another verticalpassageway 66 through a port 67 shown in FIGS. 2 and 3. Passageway 66extends along the inner side of the right side wall 47 behind the burnertube 40. At the top of the passageway 66 a relatively short horizontalpassageway 68 extends to the back wall 70 where an output port 72 islocated as shown in FIG. 3.

. The dimensions of the passageways 58 through 68 are maintainedsubstantially constant throughout so that a balanced flow is provided,that is, a constant volumetric flow is maintained. The purpose of thelabyrinth is to provide a temperature reduction means for the extremelyhot exhaust coming from the power burner tube 40. This is provided bydiscrete direction changes for the exhaust gases emanating from thenozzle 54. The present invention therefore is able to provide atemperature change at each intersection of the passageways 58 through68. In other words, four separate temperature reduction stages areprovided by the subject invention as illustrated in FIGS. 2 and 3.

Following the exit of the exhaust gases substantially reduced intemperature at the exit port 72, they are fed into a gas scrubber stageprior to being directed to the output flue 30. The scrubbing apparatusis located at the rear portion of the housing 10 along the back wall 70thereof. The scrubber comprises three water spray lines 74, 76 and 78including four spray nozzles 79 connected to each line, mounted in theupper portion of the back wall 70 between the interior wall 80 forming aportion of the passageway 68 and an output baffle plate 82 extendingdownwardly adjacent an exit flue 30. Additionally a water bath 84 ismaintained at a predetermined level in a trough 86 beneath the loweredge of the bafile 82 and the port 72 so that the exhaust gases comingfrom the labyrinth at the exit port 72 is forced to pass over thesurface of the water 84 beneath the nozzles 79 attached to the lines 74,76 and 78 and beneath the baffle 82. It should be noted that the waterspray line 74 is positioned next to the wall 80 at a level of the exitport 72 while the other two lines 76 and 78 are located along a commonplane at a relatively higher level. Thus the gases reduced intemperature by the labyrinth are subjected to a cleansing process forremoving any other particles which may be escaped incineration in theburner tube 40 as well as further reducing the temperature of theexhaust gases to an acceptable level. It should also be pointed out thatthe height of the water 84 in the trough 86 is maintained at theaforesaid predetermined level in order to again maintain a balanced gasflow through the apparatus and thus matching the air flow in thelabyrinth preceding the scrubbing apparatus so that the volumetric flowis constantly maintained throughout the entire system i.e. from the port36 of the first burner chamber 16 to the flue 30.

Referring now to FIG. 6, the scrubbing apparatus disclosed in FIG. 4 isoperated as a closed system by means of the apparatus shown therein.Reference numeral 88 designates a water pump which is adapted to feedthe lines 74, 76 and 78 shown in FIG. 4 by means of the plumbing 90extending thereto through the rear wall 70. The water pump 88 is drivenby means of an electric motor 91 connected thereto by means of amechanical coupling 92. A water feeder tank 94 is coupled into a trough86 by means of the plumbing 96 and 98 for maintaining the water level ofthe water 84 at a constant level as indicated by the level tube 100.

The apparatus thus described is comprised of four main elements: theinitial burning chamber 16, the cylindrical power burner tube 40including the power burner 46; the temperature reduction labyrinthincluding the rectangular cross-sectional passages 58, 60, 64, 66 and68; and the scrubbing apparatus including the water bath 84 maintainedat a predetermined level in combination with the water spray lines 74,76, and 78 as well as the vertical output baffle 82.

It should be pointed out that the embodiment of the subject invention asdisclosed is adapted for automatic operation by means of an electricalcontrol of the pilot burner 26, the power burner 46 and the electricmotor 91 driving the water pump 88 and the blower 28. This canbeprovided by means of an on-and-off switch 102 controlled by a manuallyset timer 104 controlling the application of volt, single phase AC powerto the apparatus as shown schematically in FIG. 7.

What has been shown and described, therefore, is a new and improvedincinerator type environmental control system which is of a small andcompact nature for residential use as well as commercial applicationswherein the exhaust gases ultimately discharged to the atmosphere aresmokeless, odorless and free of any fly ash.

Having thus described the present invention with what is at present thepreferred embodiment thereof,

We claim as our invention:

1. incinerator apparatus of the type described for consuming wastematerial and the smoke products generated therefrom, comprising, incombination:

a. a housing including means for providing a forced draft therethrough,a first burner chamber of relatively large volume located in a firstportion of said housing and an inlet opening thereto for changing saidchamber with a quantity of waste material for incineration;

b. an antechamber of relatively smaller volume coupled to said firstburner chamber through an exit port therein, said antechamber beingadapted to receive substantially all of the smoke and exhaust gases fromsaid incineration chamber;

0. burner means generating a flame and including a second relativelysmaller burner chamber coupled to said antechamber, said second burnerchamber passing through said antechamber and having a plurality ofintake openings therein in the region defined by said antechamberallowing all of said smoke and exhaust gases present in said antechamberto pass therethrough into said second incineration chamber whereby saidsmoke and exhaust gases are forced into the flame by said forced draft,said flame extending into said second burner chamber at least past saidplurality of openings;

d. temperature reduction means comprised of a plurality of passagewayslocated adjacent said first burner chamber and coupled to said secondburner chamber for receiving the exhaust from said second burner chamberand reducing the temperature thereof by a series of direction flowchanges;

e. gas scrubber means located in said housing and coupled to the outputof said temperature reduction means, said scrubber means including awater bath located in the bottom thereof and having a predeterminedheight which is held substantially constant, an output baffle, and aplurality of water sprays located above said water bath, said exhaustfrom said temperature reduction means being adapted to pass beneath saidwater sprays and over said water bath toward and beneath said outputbaffle, said predetermined water level being maintained substantiallyconstant;

f. an exit flue coupled into said scrubber chamber adjacent said outputbaffle on the opposite side from said water sprays; and

g. means for maintaining a substantially constant volumetric gas flowfrom said first burner chamber to said exit flue.

2. The invention as defined by claim 1 wherein said means for providinga forced draft comprises a blower coupled to said exit flue.

3. The invention as defined by claim 1 wherein said second burnerchamber comprises an elongated hollow member adapted to channel saidflame interiorally thereof, and wherein said plurality of openingsadditionally include an inwardly directed tab.

4. The invention as defined by claim 3 wherein the elongated member isof a tubular configuration.

5. The invention as defined by claim 4 wherein said plurality ofopenings are substantially rectangular openings and wherein saidinwardly directed tabs are substantially rectangular.

6. The invention as defined by claim 5 where said tubular configurationis substantially circular in cross section and additionally including anozzle attached to the output end of said member for producing a vortexflow of the exhaust gases therefrom.

7. The invention as defined by claim 1 wherein said plurality ofpassageways of said temperature reduction means are of substantiallyrectangular cross section and wherein said means is located intermediatesaid first burner chamber and said scrubber means.

8. The invention as defined by claim 1 wherein said first burner chamberincludes a rear wall and said antechamber is located adjacent the upperportion of said rear wall and wherein said second burner chambercomprises a generally cylindrical tubular member mounted in asubstantially horizontal position behind said rear wall.

9. The invention as defined by claim 8 wherein said second burnerchamber additionally includes a nozzle connected to the end of saidtubular member, said nozzle having a plurality of radially extendingvanes for producing a vortex of the exhaust therefrom.

10. The invention as defined by claim I and additionally includingsecond burner means extending through one wall of said housing common tosaid first burner chamber for incinerating said waste material placed insaid first burner chamber.

11. The invention as defined by claim 10 and additionally including agrate in the lower portion of said first burner chamber and a removableash drawer located below said grate.

12. The invention as defined by claim 11 and additionally includingmeans for operating both burner means automatically for a predeterminedtime interval.

13. In an incinerator apparatus of the type described for consumingwaste material and the smoke products generated therefrom, comprising,in combination:

a. a housing including means for providing a forced draft therethrough,a first burner chamber of relatively large volume located in a firstportion of said housing and an inlet opening thereto for charging saidchamber with a quantity of waste material for incineration;

b. an antechamber of relatively smaller volume coupled to said firstburner chamber throu an exit port therein, said antechamber being adapteto receive substantially all of the smoke and exhaust gases from saidincineration chamber;

c. burner means generating a flame and including a second relativelysmaller burner chamber coupled to said antechamber, said second burnerchamber passing through said antechamber and having a plurality ofintake openings therein in the region defined by said antechamber forallowing all of said smoke and exhaust gases present in said antechamberto pass therethrough into said second incineration chamber whereby saidsmoke and exhaust gases are forced into the flame by said forced draft,said flame extending into said second burner chamber;

temperature reduction means comprised of a plurality of passagewayscoupled to said burner chamber for receiving the exhaust from saidsecond burner chamber and reducing the temperature thereof as by aseries of directional flow changes;

e. an exit flue communicating with the output of said temperaturereduction means; and

f. means for maintaining a substantially constant volumetric gas flowfrom said first burner chamber to said exit flue.

14. The apparatus as claimed in claim 13 wherein said means forproviding a forced draft comprises a blower coupled to said exit flue.

15. The apparatus as claimed in claim 13 wherein said second burnerchamber comprises an elongated hollow member adapted to channel saidflame interiorally thereof, and wherein said plurality of openingsadditionally include an inwardly directed tab.

16. The apparatus as claimed in claim 15 wherein the elongated member isof a tubular configuration.

17. The apparatus as claimed in claim 16 wherein said plurality ofopenings are substantially rectangular openings and wherein saidinwardly directed tabs are substantially rectangular.

18. The apparatus as claimed in claim 17 wherein said tubularconfiguration is substantially circular in cross section andadditionally including a nozzle attached to the output end of saidmember for producing a vortex flow of the exhaust gases therefrom.

19 The apparatus as claimed in claim 13 wherein said first burnerchamber includes a rear wall and said antechamber is located adjacentthe upper portion of said rear wall and wherein said second burnerchamber comprises a generally cylindrical tubular member mounted in asubstantially horizontal position behind said rear wall.

20. The apparatus as claimed in claim 13 and additionally including agrate in the lower portion of said first burner chamber and a removableash drawer located below said grate.

1. Incinerator apparatus of the type described for consuming wastematerial and the smoke products generated therefrom, comprising, incombination: a. a housing including means for providing a forced drafttherethrough, a first burner chamber of relatively large volume locatedin a first portion of said housing and an inlet opening thereto forchanging said chamber with a quantity of waste material forincineration; b. an antechamber of relatively smaller volume coupled tosaid first burner chamber through an exit port therein, said antechamberbeing adapted to receive substantially all of the smoke and exhaustgases from said incineration chamber; c. burner means generating a flameand including a second relatively smaller burner chamber coupled to saidantechamber, said second burner chamber passing through said antechamberand having a plurality of intake openings therein in the region definedby said antechamber allowing all of said smoke and exhaust gases presentin said antechamber to pass therethrough into said second incinerationchamber whereby said smoke and exhaust gases are forced into the flameby said forced draft, said flame extending into said second burnerchamber at least past said plurality of openings; d. temperaturereduction means comprised of a plurality of passageways located adjacentsaid first burner chamber and coupled to said second burner chamber forreceiving the exhaust from said second burner chamber and reducing thetemperature thereof by a series of direction flow changes; e. gasscrubber means located in said housing and coupled to the output of saidtemperature reduction means, said scrubber means including a water bathlocated in the bottom thereof and having a predetermined height which isheld substantially constant, an output baffle, and a plurality of watersprays located above said water bath, said exhaust from said temperaturereduction means being adapted to pass beneath said water sprays and oversaid water bath toward and beneath said output baffle, saidpredetermined water level being maintained substantially constant; f. anexit flue coupled into said scrubber chamber adjacent said output baffleon the opposite side from said water sprays; and g. means formaintaining a substantially constant volumetric gas flow from said firstburner chamber to said exit flue.
 2. The invention as defined by claim 1wherein said means for providing a forced draft comprises a blowercoupled to said exit flue.
 3. The invention as defined by claim 1wherein said second burner chamber comprises an elongated hollow memberadapted to channel said flame interiorally thereof, and wherein saidplurality of openings additionally include an inwardly directed tab. 4.The invention as defined by claim 3 wherein the elongated member is of atubular configuration.
 5. The invention as defined by claim 4 whereinsaid plurality of openings are substantially rectangular openings andwherein said inwardly directed tabs are substantially rectangular. 6.The invention as defined by claim 5 where said tubular configuration issubstantially circular in cross section and additionally including anozzle attached to the output end of said member for producing a vortexflow of the exhaust gases therefrom.
 7. The invention as defined byclaim 1 wherein said plurality of passageways of said temperaturereduction means are of substantially rectangular cross section andwherein said means is located intermediate said first burner chamber andsaid scrubber means.
 8. The invention as defined by claim 1 wherein saidfirst burner chamber includes a rear wall and said Antechamber islocated adjacent the upper portion of said rear wall and wherein saidsecond burner chamber comprises a generally cylindrical tubular membermounted in a substantially horizontal position behind said rear wall. 9.The invention as defined by claim 8 wherein said second burner chamberadditionally includes a nozzle connected to the end of said tubularmember, said nozzle having a plurality of radially extending vanes forproducing a vortex of the exhaust therefrom.
 10. The invention asdefined by claim 1 and additionally including second burner meansextending through one wall of said housing common to said first burnerchamber for incinerating said waste material placed in said first burnerchamber.
 11. The invention as defined by claim 10 and additionallyincluding a grate in the lower portion of said first burner chamber anda removable ash drawer located below said grate.
 12. The invention asdefined by claim 11 and additionally including means for operating bothburner means automatically for a predetermined time interval.
 13. In anincinerator apparatus of the type described for consuming waste materialand the smoke products generated therefrom, comprising, in combination:a. a housing including means for providing a forced draft therethrough,a first burner chamber of relatively large volume located in a firstportion of said housing and an inlet opening thereto for charging saidchamber with a quantity of waste material for incineration; b. anantechamber of relatively smaller volume coupled to said first burnerchamber through an exit port therein, said antechamber being adapted toreceive substantially all of the smoke and exhaust gases from saidincineration chamber; c. burner means generating a flame and including asecond relatively smaller burner chamber coupled to said antechamber,said second burner chamber passing through said antechamber and having aplurality of intake openings therein in the region defined by saidantechamber for allowing all of said smoke and exhaust gases present insaid antechamber to pass therethrough into said second incinerationchamber whereby said smoke and exhaust gases are forced into the flameby said forced draft, said flame extending into said second burnerchamber; d. temperature reduction means comprised of a plurality ofpassageways coupled to said burner chamber for receiving the exhaustfrom said second burner chamber and reducing the temperature thereof asby a series of directional flow changes; e. an exit flue communicatingwith the output of said temperature reduction means; and f. means formaintaining a substantially constant volumetric gas flow from said firstburner chamber to said exit flue.
 14. The apparatus as claimed in claim13 wherein said means for providing a forced draft comprises a blowercoupled to said exit flue.
 15. The apparatus as claimed in claim 13wherein said second burner chamber comprises an elongated hollow memberadapted to channel said flame interiorally thereof, and wherein saidplurality of openings additionally include an inwardly directed tab. 16.The apparatus as claimed in claim 15 wherein the elongated member is ofa tubular configuration.
 17. The apparatus as claimed in claim 16wherein said plurality of openings are substantially rectangularopenings and wherein said inwardly directed tabs are substantiallyrectangular.
 18. The apparatus as claimed in claim 17 wherein saidtubular configuration is substantially circular in cross section andadditionally including a nozzle attached to the output end of saidmember for producing a vortex flow of the exhaust gases therefrom. 19The apparatus as claimed in claim 13 wherein said first burner chamberincludes a rear wall and said antechamber is located adjacent the upperportion of said rear wall and wherein said second burner chambercomprises a generally cylindrical tubular member mounted in asubstantially horizontal position behind said rear wall.
 20. THeapparatus as claimed in claim 13 and additionally including a grate inthe lower portion of said first burner chamber and a removable ashdrawer located below said grate.